E.V. Karnavsky - Division Head, JSC «Giprogazcentr», Nizhny Novgorod V.R. Milov - Dr.Sc. (Eng.), Professor, Head of Department Nizhny Novgorod State Technical University n.a. R.E. Alek-seev S.A. Nikulin - Engineer, JSC « Giprogazcentr», Nizhny Novgorod R.L. Shibert - Ph.D. (Eng.), Associate Professor, Nizhny Novgorod State Technical University n.a. R. E. Alekseev M.G. Modina - Student, Nizhny Novgorod State Technical University n.a. R. E. Alekseev